Lesson-1, Hello World Program

What you need?

1. A MAC OR PC running XCODE
2. GCC compiler installed

 First Hello World Program

#import <Foundation/Foundation.h>

      int main (int argc, const char *argv[])
      {

          NSLog (@"Hello, Objective-C!");

          return (0);
      } // main

 How to Run the program?

• Save the program using Command + S
• Run the program using Command + R

#import <Foundation/Foundation.h> 
That is simply means, we are telling that compiler we are using the Foundation Framework, which is collection of parts headers, images, libraries etc.

 NSLog (@"Hello, Objective-C!");

NSLog is a statement that is used to display string on the screen like pritnf() in C programming.